Abstract: In recent years, mapping operations in open-pit mines are made by using Unmanned Aerial Vehicles (UAV)having the advantages of cost, time and occupational safety. Using UAVs, easy, fast, high sensitive and economicmeasurements can be done in difficult field conditions. The advantages of UAV based mapping applications inopen-pit mines are explained in this study. Within this scope, orthophoto maps produced by UAV, digital elevationmodels (DEM), amount of stripping and production calculations, stock and dumping volume determinations anddeformation measurement studies are presented.